Science & Mathematics - 31 October 2007

2007-10-31 04:12:47 · 4 answers · asked by Anonymous in Chemistry

Could a realy fat guy have his own visible gravitional pull

2007-10-31 04:05:55 · 4 answers · asked by Mark 2 in Physics

im in 12th ryt now nd i gotta a great interest in space n the universe...nd i wanna work in research of star,planets nd galaxies...so cud u suggest me wot is the field 4 this nd the level of courses that wud in it.....??

2007-10-31 04:02:22 · 5 answers · asked by Anonymous in Astronomy & Space

My logic tells me that since the earth is rotating the equator must be travelling the fastest, so this should be the best latitude to launch rockets because you could take advantage of the speed of the earth in reaching escape speed.

According to some news website, about the launch site to be made at Cape breton "The company chose Cape Breton because it lies at approximately the same latitude as Russia's launch facility, the Baikonur Cosmodrome."

Why is this latitude so wonderful?

(PS: this isn't a part of the question, but the fact that there is going to be this launch pad in Cape Breton, answers my first question on Yahoo answers whichly was how the heck can you "win a sub orbital space flight" from entering a contest at Shoppers drug mart? because i assumed it was only the russians doing it then.)

2007-10-31 04:02:15 · 2 answers · asked by little_elven 2 in Astronomy & Space

2007-10-31 03:59:01 · 2 answers · asked by Hemang 1 in Geography

All of the events listed below occur in the light reactions of photosynthesis except
A) oxygen is produced.
B) NADP+ is reduced to NADPH.
C) carbon dioxide is incorporated into PGA.
D) ADP is phosphorylated to yield ATP.
E) light is absorbed and funneled to reaction-center chlorophyll a.
helpp

2007-10-31 03:58:30 · 2 answers · asked by NH 2 in Biology

The reaction-center chlorophyll of photosystem I is known as P700 because
A) there are 700 chlorophyll molecules in the center.
B) this pigment is best at absorbing light with a wavelength of 700 nm.
C) there are 700 photosystem I components to each chloroplast.
D) it absorbs 700 photons per microsecond.
E) the plastoquinone reflects light with a wavelength of 700 nm.

a littel help plsss

2007-10-31 03:56:36 · 1 answers · asked by NH 2 in Biology

In the thylakoid membranes, what is the main role of the antenna pigment molecules?
A) split water and release oxygen to the reaction-center chlorophyll
B) harvest photons and transfer light energy to the reaction-center chlorophyll
C) synthesize ATP from ADP and Pi
D) transfer electrons to ferredoxin and then NADPH
E) concentrate photons within the stroma

can u pls give me the answer i need help!

2007-10-31 03:54:32 · 1 answers · asked by NH 2 in Biology

I read articles that associated the Triangle with gravitational force and satanic forces .I don,t really understand the concept.

2007-10-31 03:51:05 · 8 answers · asked by samuel abrahams 1 in Astronomy & Space

such as the cat or pig are much less massive than those of the human.

2007-10-31 03:45:26 · 3 answers · asked by Anonymous in Biology

2007-10-31 03:42:46 · 7 answers · asked by MissLady 3 in Other - Science

According to the second law of thermodynamics, entropy of a system can decrease only if useful energy is transferred into the system from outside the system. In a system which is somehow created without an investment of external useful energy, disorder will be at a maximum.

Now let's look at the entire physical universe. The high degree of orderliness in the universe can be made possible only through the transfer of useful energy into the physical universe from outside the physical universe.

Those who are not willing to accept the existence of God or of an "Intelligent Designer" outside the physical universe, are in effect saying that there is no source of such useful energy outside the physical universe. According to them, all energy sources for the orderliness in the universe are inside the universe. This would be a violation of the second law of thermodynamics, and, therefore, contrary to the laws of physics.

(Looking for answers from physicists who really understand the subject)

2007-10-31 03:40:20 · 7 answers · asked by brandlet 2 in Physics

2007-10-31 03:40:18 · 20 answers · asked by Anonymous in Other - Science

After the Nomads(Arab, Jewish, Mongolians etc) if the new model of human was Indo Europeans, were created about 10.000 years ago, do you think God is in the process of creating a better model and refurbish others to imrove the new race to be able to survive in the space.

2007-10-31 03:37:54 · 28 answers · asked by armine_aksay 2 in Astronomy & Space

2007-10-31 03:30:08 · 8 answers · asked by jacky c 1 in Engineering

According to the answer for question number 4:
http://www.cis.hut.fi/Opinnot/T-61.5100/laskarit/dkkexer2_ans.pdf

If I interpret it correctly, it uses the ~ symbol to represent proportionality. Is this a correct symbol for proportionality?

Thank you very much.

2007-10-31 03:25:27 · 3 answers · asked by I need answers 1 in Mathematics

Find all z which satisfy the following, expressing answers in x+iy form :

(i) (2+i)z + 3i - 1= 2 + 2i

(ii) (z-i)/(z-1) = 2/3

Any help will be appreciated

2007-10-31 03:20:31 · 4 answers · asked by Anonymous in Mathematics

2007-10-31 03:20:05 · 8 answers · asked by anuj42930 1 in Engineering

At a ball game, consider a baseball of mass m=0.15 kg that falls directly downward at a speed v=40 m/s into the hands of a fan. What impulse Ft must be supplied to bring the ball to rest? If the ball is stopped in 0.03 s, what is the average force of the ball on the catcher's hand?

2007-10-31 03:19:31 · 7 answers · asked by Anonymous in Physics

a) volume of particles are assumed to be large compared to distances between them

b) particles are in constant random motion

c) forces of attraction between particles effect the observed pressure

d) collisions between particles, and between particles and the container wall are both inelastic collisions

e) observed pressure is caused by collisions of particles with the conatiner walls

f) velocity of particles is independent of temperature

2007-10-31 03:19:12 · 3 answers · asked by unique_fantasy 1 in Chemistry

I need to find Radial, Tangential components of acceleration in nonuniform circular motion in 2-D & 3-Dimensionals?

2007-10-31 03:18:00 · 1 answers · asked by {A} Arsalan 1 in Physics

When you hold two magnets close together they bond.

However when you move these magnets around each other there seems to be some resistence between them.

Could any boffins tell me what causes this and also what it is called?

Thanks

2007-10-31 03:16:41 · 5 answers · asked by davie 2 in Physics

tell me how typhoons got there name and how that hurricanes derfferent from them

2007-10-31 03:15:10 · 4 answers · asked by Anonymous in Weather

now?
if seagulls are not eating the birds........

2007-10-31 03:14:15 · 6 answers · asked by I dont know 4 in Zoology

2007-10-31 03:14:11 · 1 answers · asked by Anonymous in Astronomy & Space

this is one of my HW problems in Astronomy class.
I need calculation to write..

Please help..
Thank You !!

2007-10-31 03:12:36 · 4 answers · asked by Anonymous in Astronomy & Space

Please show work, I'd love to learn something, not just get the right answer.

24k² + k - 3

25w² - 5w - 6

m² - 18m - 40

2007-10-31 03:09:08 · 7 answers · asked by Anonymous in Mathematics

2007-10-31 03:01:32 · 6 answers · asked by Scott P 1 in Mathematics

2007-10-31 02:56:03 · 3 answers · asked by Cristina V 2 in Earth Sciences & Geology

a scuba diver's tank contains 0.29 kg of O2 compressed into a volume of 2.3L

I know the answers..but i dont' know how to get it!!

(a) calculate the gas pressure inside the tank at 9 degrees C.
answer: 91 atm

(b) what volume would this oxygen occupy at 26 degrees C and .95 atm?
answer: 2.3 x 10^2 L

2007-10-31 02:54:25 · 3 answers · asked by WynnLasVegas 1 in Chemistry